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  Cavity quantum electrodynamical Chern insulator: Towards light-induced quantized anomalous Hall effect in graphene

Wang, X., Ronca, E., & Sentef, M. A. (2019). Cavity quantum electrodynamical Chern insulator: Towards light-induced quantized anomalous Hall effect in graphene. Physical Review B, 99(23): 235156. doi:10.1103/PhysRevB.99.235156.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0003-310C-9 Version Permalink: https://hdl.handle.net/21.11116/0000-0004-46D6-C
Genre: Journal Article

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 Creators:
Wang, X.1, Author
Ronca, E.2, Author           
Sentef, M. A.3, Author           
Affiliations:
1Department of Physics, Tsinghua University, ou_persistent22              
2Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
3Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              

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 Abstract: We show that an energy gap is induced in graphene by light-matter coupling to a circularly polarized photon mode in a cavity. Using many-body perturbation theory, we compute the electronic spectra which exhibit photon-dressed sidebands akin to Floquet sidebands for laser-driven materials. In contrast with Floquet topological insulators, in which a strictly quantized Hall response is induced by light only for off-resonant driving in the high-frequency limit, the photon-dressed Dirac fermions in the cavity show a quantized Hall response characterized by an integer Chern number. Specifically for graphene, we predict that a Hall conductance of 2e2/h can be induced in the low-temperature limit.

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Language(s): eng - English
 Dates: 2019-03-012019-06-282019-06-28
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevB.99.235156
arXiv: 1903.00339
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Project name : Discussions with U. de Giovannini, H. Hübener, S. Latini, A. Rubio, and S. A. Sato are gratefully acknowledged. X.W. acknowledges support by the Tsinghua Xuetang Talents program. M.A.S. acknowledges financial support by the DFG through the Emmy Noether Program (SE 2558/2-1).
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 99 (23) Sequence Number: 235156 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008